OFFSET
1,2
LINKS
Seiichi Manyama, Table of n, a(n) for n = 1..387
FORMULA
MATHEMATICA
Table[Total[n^(Divisors[n]-1)], {n, 20}] (* Harvey P. Dale, Aug 08 2019 *)
PROG
(PARI) {a(n) = sumdiv(n, d, n^(d-1))}
CROSSREFS
KEYWORD
nonn
AUTHOR
Seiichi Manyama, Jun 26 2019
STATUS
approved